Nut-lock.



L i Spie eiflcatiion Letters To all whom t may concevoir..

Be it known -thati I, ANDREW SON, a citizen .of theaUnitedStates,residing at Englewood,- inrthe "county `of Clark and State of Kansas, have invented .new .and useful Improvementsgin l\Tut"-Lo( ks, of .which the vf(')llowii1'g iis a' speci-ficatinl.-y

This invention relates to improvements in means for 'lockingfa-nut'on'ra bolt. f

In carrying out my invention it is my pur.

pose to screw on a bolt having a square end, a nut provided with means for removably engaging with a cap or locking member that is held by the square end of the bolt, and thus prevent the nut turning with the bolt.

It is also my purpose to provide a locking means whereby a nut may be locked at any desired position with respect to the length of a bolt and removed from the bolt when desired. l

Other objects and advantages will appear as the nature of the invention is better understood, reference being had to the accompanying drawings, in which,

Figure 1 is a sectional view through a structure connected by a nut and bolt, illustrating the improvement.

Fig. 2 is a frontv elevation of the same looking toward the nut.-

Fig. 3 is a perspective view of the nut.

Fi 4 is a similar view of the locking mem er.

Fig. 5 is a detail view of the outer end of the bolt.

As disclosed by the drawings I employ a bolt 1 having its shank, at end of its threads provided with a square extension 2.

On the bolt is screwed a nut 3.` This nut, upon its outer face, and upon two-of its diametrieally opposing sides is formed with outstanding lugs 4, the said lugs being notched, as at 5 upon their outer ends. The

. lugs, upon their inner faces are provided vwith transverse depressions or notches 6 which intersect the notches 5.

The nut, upon its outer face is provided with a rectangular depression forming a pocket 7. Y

The locln'ng. member is in the nature of a cap nut provided with a bore of ktwo dimensions and of two shapes. the inner end ofthe locking member is enlarged as at 8, the said enlarged portion being of a comparatively great depth and designed to be arranged over the round threaded portion of the bolt, the remainder The bore, from ratentf'efii Angle, 1ers.

end-.of I*the bolt-.1' The lockingfmemberis also 1 received inlthe'pocket at the outer end of the nut.- f' Thei locking member, is preferably constructedlf springlsteel, andjhastwo of itsdiametrically opposed sides cut transversely 4wardlyfto form spring ngers 9. These fingers are adapted to be arranged against the inner face of the lugs on the nut and engage with the straight shoulders provided by the notches in the said inner faces of the lugs. This locks the locking member with the nut, the contacting engagement of the walls of the square portion of the locking member with the square end of the bolt, securing the locking member to the bolt. The springs are sufliciently strong to prevent an outward movement of the locking member with respect to the nut. The locking member may be removed from the nut and bolt by a suitable instrument, such as pincers having pointed jaws inserted through the end notches of the lugs and contacting with the spring fingers to force the same out of the transverse notches ofthe lugs.

From the foregoing description, it is believed that the simplicity and advantages of the construction, when taken in connection with the'drawings, will be apparent without further detailed description.

I-Iaving thus described the invention, what I claim is:

1'. In combination with a bolt having a square end, a nut member onfsaid bolt, lugs projecting from two of the opposing sides of the'nut, a locking member arrangedbetween the lugs and having a bore receiving the square end of the bolt, and spring means carried by said locking member and co-engaging with the lugs for removably locking the said member between the lugs and to the nut.

2. In combination with a bolt having` ya square end, a nut screwed on said bolt, said nut having at two of its opposed sides outwardly extending lugs which are notched on the inner faces thereof, a locking member having a bore Vengaging with the square end of the bolt and arranged'between the lugs, and spring locking means integrally formed with said member designed to engage in the notches of the lugs.

3. In combination, a bolt having a square end, a nut Screwed on said bolt, said nut having outwardly extendinglngs on two of the opposed faces thereof said-lugs; at the`i'ends'-f thereof being notched, said lugs having theiryk inner faces provided with transverse notches" intersectinghthe, first mentioned notches, :a locking memberA` having a Ybore to receive both the threaded and thefsquareendfof theirA bolt, integrally formed spring members on twoffof theopposed; sidesfef` theslockinggmemf ber, yand said*:springmember adaptedito: en-f gage With the `saidtransversenotches: on thea innerl Afaces of,` thefvlu'gsw,l Y

4... In combination; ai beltfhaviingfa squaree, endra nut. threadede 0n-.fsaidrbeltgrxsaid nut. having outwardlyferitendinglugs Whieharega;

notched at their outerends and. Which are rovidedon their inner Yfaces with notches intersecting first' li-nentioneol notches, said nut-Wupon the outer face thereof being formed with a pocket, a locking member havingplabore to receive both the, threaded.. and 'square-portion of the bolt andibeingofa SizeftQibereceWede/in the Pocket `0f the 1111, said locking member being constructed of spring material and-. rhavingatvvo .of @its :fop-e posedeisides intseg-rallyeiformed@@vvithfel outwardlyes extendingrspringeelementsradaptedi 1 to errgagenvith thernotcheson -.the1inner ilfaces. 1 Oft'he lugS.' er

Inf"testimonyrwhereoifl alibiany-signaturee;.l f

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